Winter Wheat Spring Tube Technology in Huanghuai and Northern Winter Wheat Region in 2015

“Spring is coming” is approaching, and the winter wheat in the southwest region has entered the jointing stage. The winter wheat in the middle and lower reaches of the Yangtze River and southern Huanghuai have gradually returned. This is a crucial period for strengthening field management and establishing a reasonable population. At present, the overall growth of winter wheat is relatively good, but there are also some problems that cannot be ignored. In some regions, the dry elephants rise, and diseases and insect pests are emphasized. In early spring, there is a large threat of low temperature and freezing damage. In view of the characteristics and problems of the growth of wheat this year, the technical route for field management in the spring is: drought and seedling protection, control of stability, and promotion of weak and strong, because of the appropriate conditions for the seedlings, strengthen the guidance of classification, highlight disaster prevention and mitigation, scientific planning of fertilizer, Prevent and control pests and weeds, build a reasonable population, and build a high-yield shelf.

Huanghuai and northern winter wheat area

The situation of the seedlings and the locust in this area was generally good, but the dry elephants in some areas looked up and was not conducive to wheat turning green and susceptible to freezing damage. To drought and seedling protection, cold and frost resistance, reasonable management of water and fertilizer, control and stability, protect the growth of the ear, promote the weak and strong, build groups, promote the ear, increase grain, competition grain weight.

(1) Watering and keeping seedlings, and resisting drought and freezing. For wheat fields with poor lye, the soil shall be replenished promptly after thawing in the early spring, and the seedlings shall be protected against drought and seedlings, and shall be timely scratched after watering to increase the ground temperature, eliminate compaction, further improve the soil moisture content, and prevent or reduce the threat of freezing damage.

(B) repression and deterrence, mentioning protection. Combine repression and squatting, press the squat first, promote the Panasonic on the soil, and increase the temperature. For cornfields with extensive site preparation, planting, and non-irrigation conditions, the soil in early spring will be repressed immediately after defrosting and the soil will be buried, bridging the cracks, reducing water evaporation, and promoting root growth. The repression of Wang Miao after the return of spring wheat to early spring is also an effective measure to control the growth of the disease.

(C) to promote the combination of control, fertilizer and water operations. For irrigated wheat fields, it is necessary to adjust fertilizer and water according to local conditions. Three kinds of seedlings to promote the main. The spring topdressing is carried out in two stages. The first time in the return period of 5 cm, the ground temperature is stable at about 5°C, and the topdressing water is applied. The mu application of urea is 8-10 kg and the appropriate amount of diammonium phosphate; the second time in the jointing stage, the Mushi Urea 5-7 kilograms, improve the spike rate, promote floret development, increase the number of grains per spike; for leaf color and normal late-seeding weak seedlings and wheat fields, to control early spring watering, so as not to reduce the temperature and soil permeability affect the growth of wheat seedlings . The second type of seedlings promotes control and integration. The general level of soil fertility is 200,000-700,000 Class II wheat fields with 200,000 acres of stalks. In the early stages of wheat development, combined with watering acres, 10-15 kilograms of urea are recovered; the second highest level of soil fertility is 700,000-800,000 acres of wheat. In the middle of the wheat rise, top dressing watered. One type of seedling control promotes binding. Spray Zhuang Fengan and other regulators during the start-up period, shorten the internodes of the base, control the prosperous growth of the plants, and prevent lodging at the late stage of growth. During the jointing stage, topdressing watering, mu recovery urea 13-15 kg. Wang Changmiao to control the main. For the phenomenon without de-fertilization, the seedlings should be repressed early in the spring to avoid excessive spring tiller. In the jointing stage, combined with watering mu, topdressing urea 10-15 kilograms; for the phenomenon of de-fertilization, combined with watering Mu topdressing in the period of getting up. Urea 10-15 kg.

(d) Repression and lifting, and rain and fertilizer. For non-irrigated dryland wheat, the repression and extraction of alfalfa should be used as a key measure for the management of spring wheat and improve the ability of wheat to resist drought. In early spring, when the soil is returned to the soil or after it rains, nitrogen fertilizer is applied to the fertilizer. Generally, about 10 kilograms of urea are applied. The application of phosphate fertilizer to the base fertilizer with diammonium phosphate.

(e) Prevention and control of pests, chemical weeding. We must do a good job in forecasting and forecasting diseases and insect pests, such as sheath blight, full-blind disease, wheat spiders, and midge pests, and guide farmers in scientific selection of medicines, safe use of medicines, early prevention and early treatment, and general defense. For wheat fields that have not been chemically weeded before winter, after the spring average daily temperature has steadily passed 6°C, select sunny weather from 10:00 am to 4:00 pm. According to the type of weeds in the field, select herbicides on the road and remove them in time. And strictly in accordance with the use of concentration, appropriate period and technical operating procedures to avoid phytotoxicity.

(6) Prevent freezing injury and remediate it in time. Pay close attention to changes in the weather, timely irrigation before cooling, improve the soil moisture content, regulate the microclimate near the ground, reduce the temperature changes on the ground, and prevent early spring freezing injury. After the occurrence of frost damage, appropriate nitrogen fertilizer should be applied in a timely manner and then watered to promote the recovery of frozen wheat.

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